Holden Arboretum
Kirtland, Ohio

The arboretum was established in 1931 on 100 acres. Since then it has grown into one of the largest arboreta in the country with 3,500 acres. The plant collection contains nearly 20,000 plants representing more than 6,000 taxa. The garden’s oak collection is recognized by the North American Plant Collections consortium (NAPCC). Other major collections include conifers, magnolias, crabapples and viburnums.

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